市场窄幅震荡，沪指微跌

Market Overview - The A-share market experienced narrow fluctuations with the Shanghai Composite Index slightly declining by 0.09% to close at 3454.79 points [2] - The Shenzhen Component Index fell by 0.61%, while the ChiNext Index dropped by 1.13% [2] - Overall, more than 3200 stocks in the market declined, indicating a bearish sentiment [4] Sector Performance - The top-performing sectors included Steel (3.37%), Coal (1.99%), and Building Materials (1.42%) [3] - Conversely, the worst-performing sectors were Electronics (-2.01%), Communication (-1.96%), and Defense & Military Industry (-1.94%) [3] - Concept stocks such as Low-E Glass (4.24%) and Silicon Energy (4.19%) showed strong performance, while Brain-Computer Interface (-2.60%) and EDR Concept (-2.47%) lagged [3] Future Outlook - The market is expected to remain volatile, with attention on domestic policies, US-China tariffs, and potential interest rate cuts by the Federal Reserve [6] - The upcoming mid-year reports in July are anticipated to significantly impact individual stock performances [6] - Analysts suggest focusing on sectors such as Finance, Machinery, Consumer Goods, and TMT (Technology, Media, and Telecommunications) for potential investment opportunities [6] Key Events - A notable surge in marine economy concept stocks was observed following the Central Financial Committee's meeting on July 1, which emphasized the high-quality development of the marine economy [5]